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Finding the Fourth Proportional to 7,908.29, 10,912.89 and 4,371.22

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Solution

The fourth proportional to 7,908.29, 10,912.89 and 4,371.22 is: 6,031.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.29 : 10,912.89 = 4,371.22 : x
  2. Step 2: Convert to fraction form
    7,908.29/10,912.89 = 4,371.22/x
  3. Step 3: Cross multiply
    7,908.29x = 10,912.89 × 4,371.22
  4. Step 4: Simplify right side
    7,908.29x = 47,702,643.03
  5. Step 5: Solve for x
    x = 47,702,643.03/7,908.29
  6. Step 6: Final answer
    x = 6,031.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.